Hnath-Chisolm T, Medwetsky L
Center for Research in the Speech & Hearing Sciences, Graduate School, City University of New York, New York.
Ear Hear. 1988 Dec;9(6):322-8. doi: 10.1097/00003446-198812000-00008.
Two tactile coding schemes of voice fundamental frequency were compared in terms of the detection of terminal frequency changes in simple syllable-like frequency contours. The coding schemes were: (1) temporal, single-channel--in which input frequency is represented as rate of vibration; and, (2) spatial, multichannel--in which input frequency is represented as location of vibration. An adaptive, three-interval, forced choice oddity procedure was used. The temporal, single-channel coding scheme provided a frequency resolution between 0.2 and 0.3 octaves at the fingertip. The spatial, multichannel scheme provided a spatial resolution, on the forearm, of 1-channel, which, for this 16-channel display, translates into a frequency resolution of 0.14 octaves. More learning was required with the temporal, single-channel coding scheme, than with the spatial, multichannel scheme.
在简单的类音节频率轮廓中，就基频终端频率变化的检测而言，对两种语音基频触觉编码方案进行了比较。这两种编码方案分别是：（1）时间单通道——其中输入频率表示为振动速率；以及，（2）空间多通道——其中输入频率表示为振动位置。采用了一种自适应的三区间、强制选择奇异性程序。时间单通道编码方案在指尖提供了0.2至0.3倍频程之间的频率分辨率。空间多通道方案在前臂提供了1通道的空间分辨率，对于这种16通道显示器，这转化为0.14倍频程的频率分辨率。与空间多通道编码方案相比，时间单通道编码方案需要更多的学习。
